clockwise

a. 顺时针方向的
ad. 顺时针方向

The cardinal point on the mariner's compass270= clockwise from due north and directly opposite east.

西航海者指南针上的基本方向，即从正北按顺时针方向转270度，正对着东方

The cardinal point on the mariner's compass90= clockwise from due north and directly opposite west.

东方航海罗盘上一个基本方位，正北方向顺时钟转90°或指正西的相反方向